Powderkeg

Powderkeg is a Marvel supervillain who first appeared during a breakout at the Vault, a federal prison for super-powered criminals. Possessing explosive physical power, he has clashed with heroes including Captain America and Spider-Man.

Bursting onto the scene in 1991's Avengers: Death Trap, The Vault — courtesy of creators Danny Fingeroth and Ron Lim — Powderkeg is a Copper Age Marvel villain with a flair for high-stakes chaos. Over more than three decades, this explosive presence has turned up across She-Hulk, The Amazing Spider-Man, and Avengers Epic Collection, sharing panels with heavy-hitters like Steve Rogers, Spider-Man, and Morrie Bench. Fifteen catalog appearances may not sound like a sprawling legacy, but for collectors who love hunting down the gritty, dangerous corners of the Marvel Universe, Powderkeg is exactly the kind of volatile wild card worth tracking down.